September 2012
http://www.all-science-fair-projects.com
Feburary 2012
Here is a list of projects in maths, not great for the science Investigation but very good for SCI-fest
http://math.ca/Education/mpsf/
December 2011
A site that I found recently and is home to some proper projects, ones that have something that can be measured.
http://www.scienceproject.com/
March 2011
for those interested in plants and science projects to do with them
The latest science fair website that I have found comes from the people that bring you the Discovery Channel http://school.discoveryeducation.com/sciencefaircentral/
It is a very complete site, especially for those wanting to do a Young Scientist or Scifest expt.
I found this link and its quite interesting,
Quite probably a very important place to start looking for your investigation title, follow the links
http://www.funsci.com/fun3_en/fair/fair.htm
A Link to another page like this in America, the other site is a little better :(
http://www.juliantrubin.com/fairprojects.html
On this page you will find more links to other pages that have lists of projects
http://www.energyquest.ca.gov/projects/index.html
Mad Science presents
http://www.madsci.org/experiments/
Some ideas that Intel thought up
Investigations for Microscopes
You may find a range of chemistry Ideas here
Check the Virtual Gallery
A load of projects with back up from Hilaroad.com
http://hilaroad.com/camp/projects.html
More in the way of chemistry projects
http://chemistry.about.com/od/sciencefairprojects/u/sciencefair.htm
More from the same
http://chemistry.about.com/od/demonstrationsexperiments/u/scienceprojects.htm/
A new resource of about 20 experiments, some are good ...
http://www.funsci.com/texts/index_en.htm
A few more experiments here
http://sciencecastle.com/sc/index.php/scienceexperiments/search
If you are interested in Plant Biology then this page will give you some ideas
pay for project site, some free stuff & good ideas!
The British science educators link to science investigation titles.
sciencebuddies.org
Lots of Young Scientist Ideas
http://www.sciencebuddies.org/mentoring/project_ideas.shtml
Steve Spangler does science
A Science shop with lots of DIY experiments too
Hints & Tips for doing well at a science fair (Young Scientist)
http://www.stevespanglerscience.com/experiments/allstevespanglerscience.com
http://www.west.net/~science/expindx.htm
A few more experiments